Magdalinops knowltoni, Clark, Wayne E. & Burke, Horace R., 2002

Clark, Wayne E. & Burke, Horace R., 2002, Revision Of The Weevil Genera Magdalinops Dietz And Chelonychus Dietz (Coleoptera: Curculionidae, Anthonomini), The Coleopterists Bulletin 56 (1), pp. 107-122 : 18-19

Magdalinops knowltoni , new species

Figs. 3, 4 , 12 , 20 , 22

Type Series. Holotype. United States. Utah. Emery Co.: [UTAH, Emery Co. / 4 mi. W. Orangeville / 25 June 1990 / S. M. Clark] (?, HAHC) . Paratype. United States. Utah. Carbon Co.: [Price, Ut. /6­17­35] [Utah Exp. Sta. / G. F. Knowlton / Collector] (1?, BYUC) . United States.

Description. Body ( Figs. 3–4 ): elongate, cylindrical, parallel­sided in dorsal view; length 2.6–2.9 mm; width 1.0– 1.3 mm. Integument black, narrowly exposed on pronotum and on elytral striae, not more so on even­numbered ones beneath broad cinereous scales. Head: vertex, frons and venter with dense, imbricated scales; eyes round. Rostrum ( Fig. 3 ): slender, slightly, evenly curved from base to apex in lateral view; proximal portion rugose­punctate, feebly carinate dorsomedially; lateral rostral groove punctulate; dorsal margin of lateral rostral groove subcarinate; distal portion rugulose­punctate, glabrous, shining, expanded at apex in dorsal view. Antennae: funicular segments with broad, cinereous scales; club with basal segment shining at base, ca. 1/3 length of club. Prothorax: pronotum densely, coarsely punctate, without middorsal carina; rounded, cinereous scales predominant laterally and in broad middorsal vitta; sparser, narrower, cinereous scales predominant dorsolaterally; mesocoxae separated by distance ca. 0.2 3 width of one mexocoxa. Elytra: narrow, subparallel­sided in dorsal view, flattened on disc,

114 THE COLEOPTERISTS BULLETIN 56(1), 2002

scales; scales on odd­numbered interstriae not significantly narrower or sparser; sutural interstriae not prominent. Scutellum : with dense cretaceous scales. Abdomen: sterna with dense, cinereous scales. Legs: profemur without ventral tooth; metafemur slightly narrower, unarmed; protibia with slight inner­marginal prominence in basal 2/3, inner margin concave in apical 1/3, with small, obtuse preapical prominence; protibial uncus slender, curved, acute ( Fig. 12 ); metatibia with outer margin slightly curved, inner margin slightly prominent in basal 1/3, broadly concave in apical 2/3, with small preapical prominence; metatibial mucro curved, oblique, acute ( Fig. 12 ); 5th tarsal segment long, slender, 2.8 3 longer than 3rd segment ( Figs. 12 , 20 ); tarsal claw with long, slender, acute, basal tooth arising from inner margin, well distad of base ( Fig. 20 ). Male Genitalia ( Fig. 22 ): median lobe of aedeagus evenly, gradually narrowed to rounded apex in dorsal view; endophallus unarmed.

Specimens Examined. Magdalinops knowltoni is known only from the holotype and one paratype, both from Utah .

Plant Associations. Unknown.

Remarks. The small size, slender form ( Figs. 3–4 ) and the long, curved tooth on the tarsal claw, distinguish M. knowltoni from the other species of Magdalinops . The 5th tarsal segment is longer and more slender than in M. vittipennis (cf. Figs. 11, 12 , 18, 20 ) and even longer than in M. alutaceus ( Fig. 19 ) and M. falli . The elytra are not vittate, as in M. vittipennis , but the antennal funicular segments have similar broad cinereous scales, and the antennal club has the basal segment long, glabrous and shining, as in the latter species.

The species is named for George F. Knowlton in recognition of his many contributions to the study of insects of the western United States.

Figures

Figs. 1–4. Magdalinops spp., habitus. 1) M. vittipennis, /, Oak Grove, California; 2) M. vittipennis, /, Oak Grove, California; 3) M. knowltoni,?, 4 mi. W. Orangeville, Utah; 4) M. knowltoni,?, 4 mi. W. Orangeville, Utah.

Figs. 11–14. Magdalinops spp., metathoracic leg. 11) M. vittipennis,?; 12) M. knowltoni,?; 13) M. alutaceus,?; 14) M. falli,?.

Figs. 18–20. Magdalinops spp., tarsal claws, right metathoracic leg, lateral view. 18) M. vittipennis, /; 19) M. alutaceus, /; 20) M. knowltoni,?.

Figs. 21–24. Magdalinops spp., aedeagus, dorsal view. 21) M. vittipennis; 22) M. knowltoni, holotype; 23) M. alutaceus, Brewster, Washington; 24) M. falli, holotype.